With the whitespace being important, I immediately thought "ahah, Whitespace", but there's not nearly enough there. Then I thought a 2D language which uses the boundaries, so I tried Wumpus and Alice, but nada. Am I on the right track with 2D languages with unusual topologies?

@JoKing Sorry for late reply. No, it's not a 2D language.

Cracked, working on next cop

A cryptographic proof, cause why not: 28f7f7f64b4fd2f9a3fa07d8f8b9b1af20f3d8a30311548b210f7708ab28beb3

Posted new answer. (printf 'https://chat.stackexchange.com/rooms/82992/overlapping-polyglots Z80Golf 8AqpV2G0QHvIRmBH8cPFjw==' | sha256sum)

@NieDzejkob Wait what? I tried Z80Golf. It just prints a load of newlines?

@JoKing Same here. Now I tried CRLF newlines. This still doesn't work.

Note tio does input with xxd for Z80Golf github.com/TryItOnline/tryitonline/blob/….

tio.run/…. with normal line feeds

@jslip Line feeds should be 0a, not 0d, and your link has two redundant spaces too.

Here is the correct TIO input.

Or you can use bash instead

Oh... Copy/paste error I guess. Thanks